wiki.chpc.ac.za

User Tools

Site Tools

You are here: start » guide » cloud » glossary
Trace:
guide:cloud:glossary

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision 		Previous revision
guide:cloud:glossary [2020/09/04 12:38]
lphukungoane [Glossary of Terms] 		guide:cloud:glossary [2021/12/09 16:42] (current)
Line 11: Line 11:
 ======Glossary of Terms====== ======Glossary of Terms======
  
 +----
  
-**Availability zone** - An Amazon EC2 concept of an isolated area that is used for fault tolerance. Do not confuse with an OpenStack Compute zone or cell. 
  
-**CIDR** representation (<IP>/<prefix length>) of the network’s IP subnet.+**Availability zone** - An Amazon EC2 concept of an isolated area that is used for fault tolerance. Do not confuse with an OpenStack Compute zone or cell. Availability Zones are an end-user visible logical abstraction for partitioning a cloud without knowing the physical infrastructure. 
 + 
 +**CIDR** - representation (<IP>/<prefix length>) of the network’s IP subnet.
  
 **CEPH** - Massively scalable distributed storage system that consists of an object store, block store, and POSIX-compatible distributed file system. Compatible with OpenStack. **CEPH** - Massively scalable distributed storage system that consists of an object store, block store, and POSIX-compatible distributed file system. Compatible with OpenStack.
Line 50: Line 52:
 **Public Key Authentication** - Authentication method that uses keys rather than passwords Backups. **Public Key Authentication** - Authentication method that uses keys rather than passwords Backups.
  
-**QCOW2** - One of the VM image disk formats supported by Image service.+**QCOW2 (QEMU copy-on-write version 2)** - One of the VM image disk formats supported by Image service.The QCOW image format is one of the disk image formats supported by the QEMU processor emulator. It is a representation of a fixed size block device in a file.
  
-**RAW** - One of the VM image disk formats supported by Image service; an unstructured disk image.+**RAW** - One of the VM image disk formats supported by Image service; an unstructured disk image. The raw image format is the simplest one, and is natively supported by both KVM and Xen hypervisors. You can think of a raw image as being the bit-equivalent of a block device file, created as if somebody had copied, say, /dev/sda to a file using the dd command
  
 **Routers** -  A physical or virtual network device that passes network traffic between **Routers** -  A physical or virtual network device that passes network traffic between
/app/dokuwiki/data/attic/guide/cloud/glossary.1599215885.txt.gz · Last modified: 2021/12/09 16:42 (external edit)

Page Tools

Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Noncommercial-Share Alike 3.0 Unported
CC Attribution-Noncommercial-Share Alike 3.0 Unported Donate Powered by PHP Valid HTML5 Valid CSS Driven by DokuWiki